linux-kernel - Re: [PATCH v1 2/9] extcon: extcon-ptn5150: Switch to GENMASK() for VBUS detection macro

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Date:   Wed, 26 Aug 2020 08:59:20 +0200
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     "Ramuthevar,Vadivel MuruganX" 
        <vadivel.muruganx.ramuthevar@...ux.intel.com>
Cc:     linux-kernel@...r.kernel.org, myungjoo.ham@...sung.com,
        cw00.choi@...sung.com, andriy.shevchenko@...el.com,
        thomas.langer@...el.com, cheol.yong.kim@...el.com,
        qi-ming.wu@...el.com, yin1.li@...el.com
Subject: Re: [PATCH v1 2/9] extcon: extcon-ptn5150: Switch to GENMASK() for
 VBUS detection macro

On Tue, Aug 18, 2020 at 02:57:20PM +0800, Ramuthevar,Vadivel MuruganX wrote:
> From: Ramuthevar Vadivel Murugan <vadivel.muruganx.ramuthevar@...ux.intel.com>
> 
> Switch to GENMASK() for VBUS detection macro.
> 
> Signed-off-by: Ramuthevar Vadivel Murugan <vadivel.muruganx.ramuthevar@...ux.intel.com>
> ---
>  drivers/extcon/extcon-ptn5150.c | 9 +++------
>  1 file changed, 3 insertions(+), 6 deletions(-)

This is too simple change, should be squashed with 1, 3, 4 and 5.

There is no point to split each change a define to use BIT or GENMASK.

Best regards,
Krzysztof

> 
> diff --git a/drivers/extcon/extcon-ptn5150.c b/drivers/extcon/extcon-ptn5150.c
> index 5d9a8767646b..c816a6c1e05c 100644
> --- a/drivers/extcon/extcon-ptn5150.c
> +++ b/drivers/extcon/extcon-ptn5150.c
> @@ -42,9 +42,7 @@ enum ptn5150_reg {
>  #define PTN5150_REG_CC_PORT_ATTACHMENT_MASK	\
>  	(0x7 << PTN5150_REG_CC_PORT_ATTACHMENT_SHIFT)
>  
> -#define PTN5150_REG_CC_VBUS_DETECTION_SHIFT	7
> -#define PTN5150_REG_CC_VBUS_DETECTION_MASK	\
> -	(0x1 << PTN5150_REG_CC_VBUS_DETECTION_SHIFT)
> +#define PTN5150_REG_CC_VBUS_DETECTION		BIT(7)
>  
>  #define PTN5150_REG_INT_CABLE_ATTACH_SHIFT	0
>  #define PTN5150_REG_INT_CABLE_ATTACH_MASK	\
> @@ -130,9 +128,8 @@ static void ptn5150_irq_work(struct work_struct *work)
>  			case PTN5150_UFP_ATTACHED:
>  				extcon_set_state_sync(info->edev, EXTCON_USB,
>  						false);
> -				vbus = ((reg_data &
> -					PTN5150_REG_CC_VBUS_DETECTION_MASK) >>
> -					PTN5150_REG_CC_VBUS_DETECTION_SHIFT);
> +				vbus = FIELD_GET(PTN5150_REG_CC_VBUS_DETECTION,
> +						 reg_data);
>  				if (vbus)
>  					gpiod_set_value(info->vbus_gpiod, 0);
>  				else
> -- 
> 2.11.0
>